According to Charles's Law, how does gas volume relate to temperature?

According to Charles's Law, gas volume is directly proportional to temperature at constant pressure. This relationship can be expressed mathematically as V/T = k, where V represents volume, T represents temperature (in Kelvin), and k is a constant. This means that as the temperature of a gas increases, its volume also increases, provided that the pressure remains unchanged.

This direct proportionality indicates that if you were to heat a gas, its molecules would gain kinetic energy, move more vigorously, and thus occupy a larger volume. Conversely, cooling the gas would decrease the kinetic energy of the molecules, resulting in a decrease in volume. The key aspect of Charles's Law is that this relationship only holds true when the pressure is held constant, underscoring the importance of this condition in the behavior of gases.